net/mlx5e: Add some ethtool port control entries to the uplink rep netdev

[mirror_ubuntu-eoan-kernel.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_rep.c

/*
 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <generated/utsrelease.h>
#include <linux/mlx5/fs.h>
#include <net/switchdev.h>
#include <net/pkt_cls.h>
#include <net/act_api.h>
#include <net/netevent.h>
#include <net/arp.h>

#include "eswitch.h"
#include "en.h"
#include "en_rep.h"
#include "en_tc.h"
#include "en/tc_tun.h"
#include "fs_core.h"

#define MLX5E_REP_PARAMS_LOG_SQ_SIZE \
        max(0x6, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)

static const char mlx5e_rep_driver_name[] = "mlx5e_rep";

struct mlx5e_rep_indr_block_priv {
        struct net_device *netdev;
        struct mlx5e_rep_priv *rpriv;

        struct list_head list;
};

static void mlx5e_rep_indr_unregister_block(struct net_device *netdev);

static void mlx5e_rep_get_drvinfo(struct net_device *dev,
                                  struct ethtool_drvinfo *drvinfo)
{
        strlcpy(drvinfo->driver, mlx5e_rep_driver_name,
                sizeof(drvinfo->driver));
        strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
}

static const struct counter_desc sw_rep_stats_desc[] = {
        { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_packets) },
        { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_bytes) },
        { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_packets) },
        { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, tx_bytes) },
};

struct vport_stats {
        u64 vport_rx_packets;
        u64 vport_tx_packets;
        u64 vport_rx_bytes;
        u64 vport_tx_bytes;
};

static const struct counter_desc vport_rep_stats_desc[] = {
        { MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_packets) },
        { MLX5E_DECLARE_STAT(struct vport_stats, vport_rx_bytes) },
        { MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_packets) },
        { MLX5E_DECLARE_STAT(struct vport_stats, vport_tx_bytes) },
};

#define NUM_VPORT_REP_SW_COUNTERS ARRAY_SIZE(sw_rep_stats_desc)
#define NUM_VPORT_REP_HW_COUNTERS ARRAY_SIZE(vport_rep_stats_desc)

static void mlx5e_rep_get_strings(struct net_device *dev,
                                  u32 stringset, uint8_t *data)
{
        int i, j;

        switch (stringset) {
        case ETH_SS_STATS:
                for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
                        strcpy(data + (i * ETH_GSTRING_LEN),
                               sw_rep_stats_desc[i].format);
                for (j = 0; j < NUM_VPORT_REP_HW_COUNTERS; j++, i++)
                        strcpy(data + (i * ETH_GSTRING_LEN),
                               vport_rep_stats_desc[j].format);
                break;
        }
}

static void mlx5e_vf_rep_update_hw_counters(struct mlx5e_priv *priv)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct rtnl_link_stats64 *vport_stats;
        struct ifla_vf_stats vf_stats;
        int err;

        err = mlx5_eswitch_get_vport_stats(esw, rep->vport, &vf_stats);
        if (err) {
                pr_warn("vport %d error %d reading stats\n", rep->vport, err);
                return;
        }

        vport_stats = &priv->stats.vf_vport;
        /* flip tx/rx as we are reporting the counters for the switch vport */
        vport_stats->rx_packets = vf_stats.tx_packets;
        vport_stats->rx_bytes   = vf_stats.tx_bytes;
        vport_stats->tx_packets = vf_stats.rx_packets;
        vport_stats->tx_bytes   = vf_stats.rx_bytes;
}

static void mlx5e_uplink_rep_update_hw_counters(struct mlx5e_priv *priv)
{
        struct mlx5e_pport_stats *pstats = &priv->stats.pport;
        struct rtnl_link_stats64 *vport_stats;

        mlx5e_grp_802_3_update_stats(priv);

        vport_stats = &priv->stats.vf_vport;

        vport_stats->rx_packets = PPORT_802_3_GET(pstats, a_frames_received_ok);
        vport_stats->rx_bytes   = PPORT_802_3_GET(pstats, a_octets_received_ok);
        vport_stats->tx_packets = PPORT_802_3_GET(pstats, a_frames_transmitted_ok);
        vport_stats->tx_bytes   = PPORT_802_3_GET(pstats, a_octets_transmitted_ok);
}

static void mlx5e_rep_update_hw_counters(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;

        if (rep->vport == FDB_UPLINK_VPORT)
                mlx5e_uplink_rep_update_hw_counters(priv);
        else
                mlx5e_vf_rep_update_hw_counters(priv);
}

static void mlx5e_rep_update_sw_counters(struct mlx5e_priv *priv)
{
        struct mlx5e_sw_stats *s = &priv->stats.sw;
        struct mlx5e_rq_stats *rq_stats;
        struct mlx5e_sq_stats *sq_stats;
        int i, j;

        memset(s, 0, sizeof(*s));
        for (i = 0; i < priv->channels.num; i++) {
                struct mlx5e_channel *c = priv->channels.c[i];

                rq_stats = c->rq.stats;

                s->rx_packets   += rq_stats->packets;
                s->rx_bytes     += rq_stats->bytes;

                for (j = 0; j < priv->channels.params.num_tc; j++) {
                        sq_stats = c->sq[j].stats;

                        s->tx_packets           += sq_stats->packets;
                        s->tx_bytes             += sq_stats->bytes;
                }
        }
}

static void mlx5e_rep_get_ethtool_stats(struct net_device *dev,
                                        struct ethtool_stats *stats, u64 *data)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        int i, j;

        if (!data)
                return;

        mutex_lock(&priv->state_lock);
        if (test_bit(MLX5E_STATE_OPENED, &priv->state))
                mlx5e_rep_update_sw_counters(priv);
        mlx5e_rep_update_hw_counters(priv);
        mutex_unlock(&priv->state_lock);

        for (i = 0; i < NUM_VPORT_REP_SW_COUNTERS; i++)
                data[i] = MLX5E_READ_CTR64_CPU(&priv->stats.sw,
                                               sw_rep_stats_desc, i);

        for (j = 0; j < NUM_VPORT_REP_HW_COUNTERS; j++, i++)
                data[i] = MLX5E_READ_CTR64_CPU(&priv->stats.vf_vport,
                                               vport_rep_stats_desc, j);
}

static int mlx5e_rep_get_sset_count(struct net_device *dev, int sset)
{
        switch (sset) {
        case ETH_SS_STATS:
                return NUM_VPORT_REP_SW_COUNTERS + NUM_VPORT_REP_HW_COUNTERS;
        default:
                return -EOPNOTSUPP;
        }
}

static void mlx5e_rep_get_ringparam(struct net_device *dev,
                                struct ethtool_ringparam *param)
{
        struct mlx5e_priv *priv = netdev_priv(dev);

        mlx5e_ethtool_get_ringparam(priv, param);
}

static int mlx5e_rep_set_ringparam(struct net_device *dev,
                               struct ethtool_ringparam *param)
{
        struct mlx5e_priv *priv = netdev_priv(dev);

        return mlx5e_ethtool_set_ringparam(priv, param);
}

static int mlx5e_replace_rep_vport_rx_rule(struct mlx5e_priv *priv,
                                           struct mlx5_flow_destination *dest)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct mlx5_flow_handle *flow_rule;

        flow_rule = mlx5_eswitch_create_vport_rx_rule(esw,
                                                      rep->vport,
                                                      dest);
        if (IS_ERR(flow_rule))
                return PTR_ERR(flow_rule);

        mlx5_del_flow_rules(rpriv->vport_rx_rule);
        rpriv->vport_rx_rule = flow_rule;
        return 0;
}

static void mlx5e_rep_get_channels(struct net_device *dev,
                                   struct ethtool_channels *ch)
{
        struct mlx5e_priv *priv = netdev_priv(dev);

        mlx5e_ethtool_get_channels(priv, ch);
}

static int mlx5e_rep_set_channels(struct net_device *dev,
                                  struct ethtool_channels *ch)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        u16 curr_channels_amount = priv->channels.params.num_channels;
        u32 new_channels_amount = ch->combined_count;
        struct mlx5_flow_destination new_dest;
        int err = 0;

        err = mlx5e_ethtool_set_channels(priv, ch);
        if (err)
                return err;

        if (curr_channels_amount == 1 && new_channels_amount > 1) {
                new_dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
                new_dest.ft = priv->fs.ttc.ft.t;
        } else if (new_channels_amount == 1 && curr_channels_amount > 1) {
                new_dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
                new_dest.tir_num = priv->direct_tir[0].tirn;
        } else {
                return 0;
        }

        err = mlx5e_replace_rep_vport_rx_rule(priv, &new_dest);
        if (err) {
                netdev_warn(priv->netdev, "Failed to update vport rx rule, when going from (%d) channels to (%d) channels\n",
                            curr_channels_amount, new_channels_amount);
                return err;
        }

        return 0;
}

static int mlx5e_rep_get_coalesce(struct net_device *netdev,
                                  struct ethtool_coalesce *coal)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_get_coalesce(priv, coal);
}

static int mlx5e_rep_set_coalesce(struct net_device *netdev,
                                  struct ethtool_coalesce *coal)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_set_coalesce(priv, coal);
}

static u32 mlx5e_rep_get_rxfh_key_size(struct net_device *netdev)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_get_rxfh_key_size(priv);
}

static u32 mlx5e_rep_get_rxfh_indir_size(struct net_device *netdev)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_get_rxfh_indir_size(priv);
}

static void mlx5e_uplink_rep_get_pauseparam(struct net_device *netdev,
                                            struct ethtool_pauseparam *pauseparam)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        mlx5e_ethtool_get_pauseparam(priv, pauseparam);
}

static int mlx5e_uplink_rep_set_pauseparam(struct net_device *netdev,
                                           struct ethtool_pauseparam *pauseparam)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_set_pauseparam(priv, pauseparam);
}

static int mlx5e_uplink_rep_get_link_ksettings(struct net_device *netdev,
                                               struct ethtool_link_ksettings *link_ksettings)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_get_link_ksettings(priv, link_ksettings);
}

static int mlx5e_uplink_rep_set_link_ksettings(struct net_device *netdev,
                                               const struct ethtool_link_ksettings *link_ksettings)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);

        return mlx5e_ethtool_set_link_ksettings(priv, link_ksettings);
}

static const struct ethtool_ops mlx5e_vf_rep_ethtool_ops = {
        .get_drvinfo       = mlx5e_rep_get_drvinfo,
        .get_link          = ethtool_op_get_link,
        .get_strings       = mlx5e_rep_get_strings,
        .get_sset_count    = mlx5e_rep_get_sset_count,
        .get_ethtool_stats = mlx5e_rep_get_ethtool_stats,
        .get_ringparam     = mlx5e_rep_get_ringparam,
        .set_ringparam     = mlx5e_rep_set_ringparam,
        .get_channels      = mlx5e_rep_get_channels,
        .set_channels      = mlx5e_rep_set_channels,
        .get_coalesce      = mlx5e_rep_get_coalesce,
        .set_coalesce      = mlx5e_rep_set_coalesce,
        .get_rxfh_key_size   = mlx5e_rep_get_rxfh_key_size,
        .get_rxfh_indir_size = mlx5e_rep_get_rxfh_indir_size,
};

static const struct ethtool_ops mlx5e_uplink_rep_ethtool_ops = {
        .get_drvinfo       = mlx5e_rep_get_drvinfo,
        .get_link          = ethtool_op_get_link,
        .get_strings       = mlx5e_rep_get_strings,
        .get_sset_count    = mlx5e_rep_get_sset_count,
        .get_ethtool_stats = mlx5e_rep_get_ethtool_stats,
        .get_ringparam     = mlx5e_rep_get_ringparam,
        .set_ringparam     = mlx5e_rep_set_ringparam,
        .get_channels      = mlx5e_rep_get_channels,
        .set_channels      = mlx5e_rep_set_channels,
        .get_coalesce      = mlx5e_rep_get_coalesce,
        .set_coalesce      = mlx5e_rep_set_coalesce,
        .get_link_ksettings = mlx5e_uplink_rep_get_link_ksettings,
        .set_link_ksettings = mlx5e_uplink_rep_set_link_ksettings,
        .get_rxfh_key_size   = mlx5e_rep_get_rxfh_key_size,
        .get_rxfh_indir_size = mlx5e_rep_get_rxfh_indir_size,
        .get_pauseparam    = mlx5e_uplink_rep_get_pauseparam,
        .set_pauseparam    = mlx5e_uplink_rep_set_pauseparam,
};

static int mlx5e_attr_get(struct net_device *dev, struct switchdev_attr *attr)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct net_device *uplink_upper = NULL;
        struct mlx5e_priv *uplink_priv = NULL;
        struct net_device *uplink_dev;

        if (esw->mode == SRIOV_NONE)
                return -EOPNOTSUPP;

        uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
        if (uplink_dev) {
                uplink_upper = netdev_master_upper_dev_get(uplink_dev);
                uplink_priv = netdev_priv(uplink_dev);
        }

        switch (attr->id) {
        case SWITCHDEV_ATTR_ID_PORT_PARENT_ID:
                attr->u.ppid.id_len = ETH_ALEN;
                if (uplink_upper && mlx5_lag_is_sriov(uplink_priv->mdev)) {
                        ether_addr_copy(attr->u.ppid.id, uplink_upper->dev_addr);
                } else {
                        struct mlx5e_rep_priv *rpriv = priv->ppriv;
                        struct mlx5_eswitch_rep *rep = rpriv->rep;

                        ether_addr_copy(attr->u.ppid.id, rep->hw_id);
                }
                break;
        default:
                return -EOPNOTSUPP;
        }

        return 0;
}

static void mlx5e_sqs2vport_stop(struct mlx5_eswitch *esw,
                                 struct mlx5_eswitch_rep *rep)
{
        struct mlx5e_rep_sq *rep_sq, *tmp;
        struct mlx5e_rep_priv *rpriv;

        if (esw->mode != SRIOV_OFFLOADS)
                return;

        rpriv = mlx5e_rep_to_rep_priv(rep);
        list_for_each_entry_safe(rep_sq, tmp, &rpriv->vport_sqs_list, list) {
                mlx5_eswitch_del_send_to_vport_rule(rep_sq->send_to_vport_rule);
                list_del(&rep_sq->list);
                kfree(rep_sq);
        }
}

static int mlx5e_sqs2vport_start(struct mlx5_eswitch *esw,
                                 struct mlx5_eswitch_rep *rep,
                                 u32 *sqns_array, int sqns_num)
{
        struct mlx5_flow_handle *flow_rule;
        struct mlx5e_rep_priv *rpriv;
        struct mlx5e_rep_sq *rep_sq;
        int err;
        int i;

        if (esw->mode != SRIOV_OFFLOADS)
                return 0;

        rpriv = mlx5e_rep_to_rep_priv(rep);
        for (i = 0; i < sqns_num; i++) {
                rep_sq = kzalloc(sizeof(*rep_sq), GFP_KERNEL);
                if (!rep_sq) {
                        err = -ENOMEM;
                        goto out_err;
                }

                /* Add re-inject rule to the PF/representor sqs */
                flow_rule = mlx5_eswitch_add_send_to_vport_rule(esw,
                                                                rep->vport,
                                                                sqns_array[i]);
                if (IS_ERR(flow_rule)) {
                        err = PTR_ERR(flow_rule);
                        kfree(rep_sq);
                        goto out_err;
                }
                rep_sq->send_to_vport_rule = flow_rule;
                list_add(&rep_sq->list, &rpriv->vport_sqs_list);
        }
        return 0;

out_err:
        mlx5e_sqs2vport_stop(esw, rep);
        return err;
}

int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct mlx5e_channel *c;
        int n, tc, num_sqs = 0;
        int err = -ENOMEM;
        u32 *sqs;

        sqs = kcalloc(priv->channels.num * priv->channels.params.num_tc, sizeof(*sqs), GFP_KERNEL);
        if (!sqs)
                goto out;

        for (n = 0; n < priv->channels.num; n++) {
                c = priv->channels.c[n];
                for (tc = 0; tc < c->num_tc; tc++)
                        sqs[num_sqs++] = c->sq[tc].sqn;
        }

        err = mlx5e_sqs2vport_start(esw, rep, sqs, num_sqs);
        kfree(sqs);

out:
        if (err)
                netdev_warn(priv->netdev, "Failed to add SQs FWD rules %d\n", err);
        return err;
}

void mlx5e_remove_sqs_fwd_rules(struct mlx5e_priv *priv)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;

        mlx5e_sqs2vport_stop(esw, rep);
}

static void mlx5e_rep_neigh_update_init_interval(struct mlx5e_rep_priv *rpriv)
{
#if IS_ENABLED(CONFIG_IPV6)
        unsigned long ipv6_interval = NEIGH_VAR(&nd_tbl.parms,
                                                DELAY_PROBE_TIME);
#else
        unsigned long ipv6_interval = ~0UL;
#endif
        unsigned long ipv4_interval = NEIGH_VAR(&arp_tbl.parms,
                                                DELAY_PROBE_TIME);
        struct net_device *netdev = rpriv->netdev;
        struct mlx5e_priv *priv = netdev_priv(netdev);

        rpriv->neigh_update.min_interval = min_t(unsigned long, ipv6_interval, ipv4_interval);
        mlx5_fc_update_sampling_interval(priv->mdev, rpriv->neigh_update.min_interval);
}

void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;

        mlx5_fc_queue_stats_work(priv->mdev,
                                 &neigh_update->neigh_stats_work,
                                 neigh_update->min_interval);
}

static void mlx5e_rep_neigh_stats_work(struct work_struct *work)
{
        struct mlx5e_rep_priv *rpriv = container_of(work, struct mlx5e_rep_priv,
                                                    neigh_update.neigh_stats_work.work);
        struct net_device *netdev = rpriv->netdev;
        struct mlx5e_priv *priv = netdev_priv(netdev);
        struct mlx5e_neigh_hash_entry *nhe;

        rtnl_lock();
        if (!list_empty(&rpriv->neigh_update.neigh_list))
                mlx5e_rep_queue_neigh_stats_work(priv);

        list_for_each_entry(nhe, &rpriv->neigh_update.neigh_list, neigh_list)
                mlx5e_tc_update_neigh_used_value(nhe);

        rtnl_unlock();
}

static void mlx5e_rep_neigh_entry_hold(struct mlx5e_neigh_hash_entry *nhe)
{
        refcount_inc(&nhe->refcnt);
}

static void mlx5e_rep_neigh_entry_release(struct mlx5e_neigh_hash_entry *nhe)
{
        if (refcount_dec_and_test(&nhe->refcnt))
                kfree(nhe);
}

static void mlx5e_rep_update_flows(struct mlx5e_priv *priv,
                                   struct mlx5e_encap_entry *e,
                                   bool neigh_connected,
                                   unsigned char ha[ETH_ALEN])
{
        struct ethhdr *eth = (struct ethhdr *)e->encap_header;

        ASSERT_RTNL();

        if ((!neigh_connected && (e->flags & MLX5_ENCAP_ENTRY_VALID)) ||
            !ether_addr_equal(e->h_dest, ha))
                mlx5e_tc_encap_flows_del(priv, e);

        if (neigh_connected && !(e->flags & MLX5_ENCAP_ENTRY_VALID)) {
                ether_addr_copy(e->h_dest, ha);
                ether_addr_copy(eth->h_dest, ha);

                mlx5e_tc_encap_flows_add(priv, e);
        }
}

static void mlx5e_rep_neigh_update(struct work_struct *work)
{
        struct mlx5e_neigh_hash_entry *nhe =
                container_of(work, struct mlx5e_neigh_hash_entry, neigh_update_work);
        struct neighbour *n = nhe->n;
        struct mlx5e_encap_entry *e;
        unsigned char ha[ETH_ALEN];
        struct mlx5e_priv *priv;
        bool neigh_connected;
        bool encap_connected;
        u8 nud_state, dead;

        rtnl_lock();

        /* If these parameters are changed after we release the lock,
         * we'll receive another event letting us know about it.
         * We use this lock to avoid inconsistency between the neigh validity
         * and it's hw address.
         */
        read_lock_bh(&n->lock);
        memcpy(ha, n->ha, ETH_ALEN);
        nud_state = n->nud_state;
        dead = n->dead;
        read_unlock_bh(&n->lock);

        neigh_connected = (nud_state & NUD_VALID) && !dead;

        list_for_each_entry(e, &nhe->encap_list, encap_list) {
                encap_connected = !!(e->flags & MLX5_ENCAP_ENTRY_VALID);
                priv = netdev_priv(e->out_dev);

                if (encap_connected != neigh_connected ||
                    !ether_addr_equal(e->h_dest, ha))
                        mlx5e_rep_update_flows(priv, e, neigh_connected, ha);
        }
        mlx5e_rep_neigh_entry_release(nhe);
        rtnl_unlock();
        neigh_release(n);
}

static struct mlx5e_rep_indr_block_priv *
mlx5e_rep_indr_block_priv_lookup(struct mlx5e_rep_priv *rpriv,
                                 struct net_device *netdev)
{
        struct mlx5e_rep_indr_block_priv *cb_priv;

        /* All callback list access should be protected by RTNL. */
        ASSERT_RTNL();

        list_for_each_entry(cb_priv,
                            &rpriv->uplink_priv.tc_indr_block_priv_list,
                            list)
                if (cb_priv->netdev == netdev)
                        return cb_priv;

        return NULL;
}

static void mlx5e_rep_indr_clean_block_privs(struct mlx5e_rep_priv *rpriv)
{
        struct mlx5e_rep_indr_block_priv *cb_priv, *temp;
        struct list_head *head = &rpriv->uplink_priv.tc_indr_block_priv_list;

        list_for_each_entry_safe(cb_priv, temp, head, list) {
                mlx5e_rep_indr_unregister_block(cb_priv->netdev);
                kfree(cb_priv);
        }
}

static int
mlx5e_rep_indr_offload(struct net_device *netdev,
                       struct tc_cls_flower_offload *flower,
                       struct mlx5e_rep_indr_block_priv *indr_priv)
{
        struct mlx5e_priv *priv = netdev_priv(indr_priv->rpriv->netdev);
        int flags = MLX5E_TC_EGRESS | MLX5E_TC_ESW_OFFLOAD;
        int err = 0;

        switch (flower->command) {
        case TC_CLSFLOWER_REPLACE:
                err = mlx5e_configure_flower(netdev, priv, flower, flags);
                break;
        case TC_CLSFLOWER_DESTROY:
                err = mlx5e_delete_flower(netdev, priv, flower, flags);
                break;
        case TC_CLSFLOWER_STATS:
                err = mlx5e_stats_flower(netdev, priv, flower, flags);
                break;
        default:
                err = -EOPNOTSUPP;
        }

        return err;
}

static int mlx5e_rep_indr_setup_block_cb(enum tc_setup_type type,
                                         void *type_data, void *indr_priv)
{
        struct mlx5e_rep_indr_block_priv *priv = indr_priv;

        switch (type) {
        case TC_SETUP_CLSFLOWER:
                return mlx5e_rep_indr_offload(priv->netdev, type_data, priv);
        default:
                return -EOPNOTSUPP;
        }
}

static int
mlx5e_rep_indr_setup_tc_block(struct net_device *netdev,
                              struct mlx5e_rep_priv *rpriv,
                              struct tc_block_offload *f)
{
        struct mlx5e_rep_indr_block_priv *indr_priv;
        int err = 0;

        if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
                return -EOPNOTSUPP;

        switch (f->command) {
        case TC_BLOCK_BIND:
                indr_priv = mlx5e_rep_indr_block_priv_lookup(rpriv, netdev);
                if (indr_priv)
                        return -EEXIST;

                indr_priv = kmalloc(sizeof(*indr_priv), GFP_KERNEL);
                if (!indr_priv)
                        return -ENOMEM;

                indr_priv->netdev = netdev;
                indr_priv->rpriv = rpriv;
                list_add(&indr_priv->list,
                         &rpriv->uplink_priv.tc_indr_block_priv_list);

                err = tcf_block_cb_register(f->block,
                                            mlx5e_rep_indr_setup_block_cb,
                                            netdev, indr_priv, f->extack);
                if (err) {
                        list_del(&indr_priv->list);
                        kfree(indr_priv);
                }

                return err;
        case TC_BLOCK_UNBIND:
                tcf_block_cb_unregister(f->block,
                                        mlx5e_rep_indr_setup_block_cb,
                                        netdev);
                indr_priv = mlx5e_rep_indr_block_priv_lookup(rpriv, netdev);
                if (indr_priv) {
                        list_del(&indr_priv->list);
                        kfree(indr_priv);
                }

                return 0;
        default:
                return -EOPNOTSUPP;
        }
        return 0;
}

static
int mlx5e_rep_indr_setup_tc_cb(struct net_device *netdev, void *cb_priv,
                               enum tc_setup_type type, void *type_data)
{
        switch (type) {
        case TC_SETUP_BLOCK:
                return mlx5e_rep_indr_setup_tc_block(netdev, cb_priv,
                                                      type_data);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlx5e_rep_indr_register_block(struct mlx5e_rep_priv *rpriv,
                                         struct net_device *netdev)
{
        int err;

        err = __tc_indr_block_cb_register(netdev, rpriv,
                                          mlx5e_rep_indr_setup_tc_cb,
                                          netdev);
        if (err) {
                struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);

                mlx5_core_err(priv->mdev, "Failed to register remote block notifier for %s err=%d\n",
                              netdev_name(netdev), err);
        }
        return err;
}

static void mlx5e_rep_indr_unregister_block(struct net_device *netdev)
{
        __tc_indr_block_cb_unregister(netdev, mlx5e_rep_indr_setup_tc_cb,
                                      netdev);
}

static int mlx5e_nic_rep_netdevice_event(struct notifier_block *nb,
                                         unsigned long event, void *ptr)
{
        struct mlx5e_rep_priv *rpriv = container_of(nb, struct mlx5e_rep_priv,
                                                     uplink_priv.netdevice_nb);
        struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);
        struct net_device *netdev = netdev_notifier_info_to_dev(ptr);

        if (!mlx5e_tc_tun_device_to_offload(priv, netdev))
                return NOTIFY_OK;

        switch (event) {
        case NETDEV_REGISTER:
                mlx5e_rep_indr_register_block(rpriv, netdev);
                break;
        case NETDEV_UNREGISTER:
                mlx5e_rep_indr_unregister_block(netdev);
                break;
        }
        return NOTIFY_OK;
}

static struct mlx5e_neigh_hash_entry *
mlx5e_rep_neigh_entry_lookup(struct mlx5e_priv *priv,
                             struct mlx5e_neigh *m_neigh);

static int mlx5e_rep_netevent_event(struct notifier_block *nb,
                                    unsigned long event, void *ptr)
{
        struct mlx5e_rep_priv *rpriv = container_of(nb, struct mlx5e_rep_priv,
                                                    neigh_update.netevent_nb);
        struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
        struct net_device *netdev = rpriv->netdev;
        struct mlx5e_priv *priv = netdev_priv(netdev);
        struct mlx5e_neigh_hash_entry *nhe = NULL;
        struct mlx5e_neigh m_neigh = {};
        struct neigh_parms *p;
        struct neighbour *n;
        bool found = false;

        switch (event) {
        case NETEVENT_NEIGH_UPDATE:
                n = ptr;
#if IS_ENABLED(CONFIG_IPV6)
                if (n->tbl != &nd_tbl && n->tbl != &arp_tbl)
#else
                if (n->tbl != &arp_tbl)
#endif
                        return NOTIFY_DONE;

                m_neigh.dev = n->dev;
                m_neigh.family = n->ops->family;
                memcpy(&m_neigh.dst_ip, n->primary_key, n->tbl->key_len);

                /* We are in atomic context and can't take RTNL mutex, so use
                 * spin_lock_bh to lookup the neigh table. bh is used since
                 * netevent can be called from a softirq context.
                 */
                spin_lock_bh(&neigh_update->encap_lock);
                nhe = mlx5e_rep_neigh_entry_lookup(priv, &m_neigh);
                if (!nhe) {
                        spin_unlock_bh(&neigh_update->encap_lock);
                        return NOTIFY_DONE;
                }

                /* This assignment is valid as long as the the neigh reference
                 * is taken
                 */
                nhe->n = n;

                /* Take a reference to ensure the neighbour and mlx5 encap
                 * entry won't be destructed until we drop the reference in
                 * delayed work.
                 */
                neigh_hold(n);
                mlx5e_rep_neigh_entry_hold(nhe);

                if (!queue_work(priv->wq, &nhe->neigh_update_work)) {
                        mlx5e_rep_neigh_entry_release(nhe);
                        neigh_release(n);
                }
                spin_unlock_bh(&neigh_update->encap_lock);
                break;

        case NETEVENT_DELAY_PROBE_TIME_UPDATE:
                p = ptr;

                /* We check the device is present since we don't care about
                 * changes in the default table, we only care about changes
                 * done per device delay prob time parameter.
                 */
#if IS_ENABLED(CONFIG_IPV6)
                if (!p->dev || (p->tbl != &nd_tbl && p->tbl != &arp_tbl))
#else
                if (!p->dev || p->tbl != &arp_tbl)
#endif
                        return NOTIFY_DONE;

                /* We are in atomic context and can't take RTNL mutex,
                 * so use spin_lock_bh to walk the neigh list and look for
                 * the relevant device. bh is used since netevent can be
                 * called from a softirq context.
                 */
                spin_lock_bh(&neigh_update->encap_lock);
                list_for_each_entry(nhe, &neigh_update->neigh_list, neigh_list) {
                        if (p->dev == nhe->m_neigh.dev) {
                                found = true;
                                break;
                        }
                }
                spin_unlock_bh(&neigh_update->encap_lock);
                if (!found)
                        return NOTIFY_DONE;

                neigh_update->min_interval = min_t(unsigned long,
                                                   NEIGH_VAR(p, DELAY_PROBE_TIME),
                                                   neigh_update->min_interval);
                mlx5_fc_update_sampling_interval(priv->mdev,
                                                 neigh_update->min_interval);
                break;
        }
        return NOTIFY_DONE;
}

static const struct rhashtable_params mlx5e_neigh_ht_params = {
        .head_offset = offsetof(struct mlx5e_neigh_hash_entry, rhash_node),
        .key_offset = offsetof(struct mlx5e_neigh_hash_entry, m_neigh),
        .key_len = sizeof(struct mlx5e_neigh),
        .automatic_shrinking = true,
};

static int mlx5e_rep_neigh_init(struct mlx5e_rep_priv *rpriv)
{
        struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
        int err;

        err = rhashtable_init(&neigh_update->neigh_ht, &mlx5e_neigh_ht_params);
        if (err)
                return err;

        INIT_LIST_HEAD(&neigh_update->neigh_list);
        spin_lock_init(&neigh_update->encap_lock);
        INIT_DELAYED_WORK(&neigh_update->neigh_stats_work,
                          mlx5e_rep_neigh_stats_work);
        mlx5e_rep_neigh_update_init_interval(rpriv);

        rpriv->neigh_update.netevent_nb.notifier_call = mlx5e_rep_netevent_event;
        err = register_netevent_notifier(&rpriv->neigh_update.netevent_nb);
        if (err)
                goto out_err;
        return 0;

out_err:
        rhashtable_destroy(&neigh_update->neigh_ht);
        return err;
}

static void mlx5e_rep_neigh_cleanup(struct mlx5e_rep_priv *rpriv)
{
        struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;
        struct mlx5e_priv *priv = netdev_priv(rpriv->netdev);

        unregister_netevent_notifier(&neigh_update->netevent_nb);

        flush_workqueue(priv->wq); /* flush neigh update works */

        cancel_delayed_work_sync(&rpriv->neigh_update.neigh_stats_work);

        rhashtable_destroy(&neigh_update->neigh_ht);
}

static int mlx5e_rep_neigh_entry_insert(struct mlx5e_priv *priv,
                                        struct mlx5e_neigh_hash_entry *nhe)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        int err;

        err = rhashtable_insert_fast(&rpriv->neigh_update.neigh_ht,
                                     &nhe->rhash_node,
                                     mlx5e_neigh_ht_params);
        if (err)
                return err;

        list_add(&nhe->neigh_list, &rpriv->neigh_update.neigh_list);

        return err;
}

static void mlx5e_rep_neigh_entry_remove(struct mlx5e_priv *priv,
                                         struct mlx5e_neigh_hash_entry *nhe)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;

        spin_lock_bh(&rpriv->neigh_update.encap_lock);

        list_del(&nhe->neigh_list);

        rhashtable_remove_fast(&rpriv->neigh_update.neigh_ht,
                               &nhe->rhash_node,
                               mlx5e_neigh_ht_params);
        spin_unlock_bh(&rpriv->neigh_update.encap_lock);
}

/* This function must only be called under RTNL lock or under the
 * representor's encap_lock in case RTNL mutex can't be held.
 */
static struct mlx5e_neigh_hash_entry *
mlx5e_rep_neigh_entry_lookup(struct mlx5e_priv *priv,
                             struct mlx5e_neigh *m_neigh)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5e_neigh_update_table *neigh_update = &rpriv->neigh_update;

        return rhashtable_lookup_fast(&neigh_update->neigh_ht, m_neigh,
                                      mlx5e_neigh_ht_params);
}

static int mlx5e_rep_neigh_entry_create(struct mlx5e_priv *priv,
                                        struct mlx5e_encap_entry *e,
                                        struct mlx5e_neigh_hash_entry **nhe)
{
        int err;

        *nhe = kzalloc(sizeof(**nhe), GFP_KERNEL);
        if (!*nhe)
                return -ENOMEM;

        memcpy(&(*nhe)->m_neigh, &e->m_neigh, sizeof(e->m_neigh));
        INIT_WORK(&(*nhe)->neigh_update_work, mlx5e_rep_neigh_update);
        INIT_LIST_HEAD(&(*nhe)->encap_list);
        refcount_set(&(*nhe)->refcnt, 1);

        err = mlx5e_rep_neigh_entry_insert(priv, *nhe);
        if (err)
                goto out_free;
        return 0;

out_free:
        kfree(*nhe);
        return err;
}

static void mlx5e_rep_neigh_entry_destroy(struct mlx5e_priv *priv,
                                          struct mlx5e_neigh_hash_entry *nhe)
{
        /* The neigh hash entry must be removed from the hash table regardless
         * of the reference count value, so it won't be found by the next
         * neigh notification call. The neigh hash entry reference count is
         * incremented only during creation and neigh notification calls and
         * protects from freeing the nhe struct.
         */
        mlx5e_rep_neigh_entry_remove(priv, nhe);
        mlx5e_rep_neigh_entry_release(nhe);
}

int mlx5e_rep_encap_entry_attach(struct mlx5e_priv *priv,
                                 struct mlx5e_encap_entry *e)
{
        struct mlx5e_neigh_hash_entry *nhe;
        int err;

        nhe = mlx5e_rep_neigh_entry_lookup(priv, &e->m_neigh);
        if (!nhe) {
                err = mlx5e_rep_neigh_entry_create(priv, e, &nhe);
                if (err)
                        return err;
        }
        list_add(&e->encap_list, &nhe->encap_list);
        return 0;
}

void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv,
                                  struct mlx5e_encap_entry *e)
{
        struct mlx5e_neigh_hash_entry *nhe;

        list_del(&e->encap_list);
        nhe = mlx5e_rep_neigh_entry_lookup(priv, &e->m_neigh);

        if (list_empty(&nhe->encap_list))
                mlx5e_rep_neigh_entry_destroy(priv, nhe);
}

static int mlx5e_vf_rep_open(struct net_device *dev)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        int err;

        mutex_lock(&priv->state_lock);
        err = mlx5e_open_locked(dev);
        if (err)
                goto unlock;

        if (!mlx5_modify_vport_admin_state(priv->mdev,
                                           MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
                                           rep->vport, MLX5_VPORT_ADMIN_STATE_UP))
                netif_carrier_on(dev);

unlock:
        mutex_unlock(&priv->state_lock);
        return err;
}

static int mlx5e_vf_rep_close(struct net_device *dev)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        int ret;

        mutex_lock(&priv->state_lock);
        mlx5_modify_vport_admin_state(priv->mdev,
                                      MLX5_VPORT_STATE_OP_MOD_ESW_VPORT,
                                      rep->vport, MLX5_VPORT_ADMIN_STATE_DOWN);
        ret = mlx5e_close_locked(dev);
        mutex_unlock(&priv->state_lock);
        return ret;
}

static int mlx5e_rep_get_phys_port_name(struct net_device *dev,
                                        char *buf, size_t len)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        int ret;

        ret = snprintf(buf, len, "%d", rep->vport - 1);
        if (ret >= len)
                return -EOPNOTSUPP;

        return 0;
}

static int
mlx5e_rep_setup_tc_cls_flower(struct mlx5e_priv *priv,
                              struct tc_cls_flower_offload *cls_flower, int flags)
{
        switch (cls_flower->command) {
        case TC_CLSFLOWER_REPLACE:
                return mlx5e_configure_flower(priv->netdev, priv, cls_flower,
                                              flags);
        case TC_CLSFLOWER_DESTROY:
                return mlx5e_delete_flower(priv->netdev, priv, cls_flower,
                                           flags);
        case TC_CLSFLOWER_STATS:
                return mlx5e_stats_flower(priv->netdev, priv, cls_flower,
                                          flags);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlx5e_rep_setup_tc_cb(enum tc_setup_type type, void *type_data,
                                 void *cb_priv)
{
        struct mlx5e_priv *priv = cb_priv;

        switch (type) {
        case TC_SETUP_CLSFLOWER:
                return mlx5e_rep_setup_tc_cls_flower(priv, type_data, MLX5E_TC_INGRESS |
                                                     MLX5E_TC_ESW_OFFLOAD);
        default:
                return -EOPNOTSUPP;
        }
}

static int mlx5e_rep_setup_tc_block(struct net_device *dev,
                                    struct tc_block_offload *f)
{
        struct mlx5e_priv *priv = netdev_priv(dev);

        if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
                return -EOPNOTSUPP;

        switch (f->command) {
        case TC_BLOCK_BIND:
                return tcf_block_cb_register(f->block, mlx5e_rep_setup_tc_cb,
                                             priv, priv, f->extack);
        case TC_BLOCK_UNBIND:
                tcf_block_cb_unregister(f->block, mlx5e_rep_setup_tc_cb, priv);
                return 0;
        default:
                return -EOPNOTSUPP;
        }
}

static int mlx5e_rep_setup_tc(struct net_device *dev, enum tc_setup_type type,
                              void *type_data)
{
        switch (type) {
        case TC_SETUP_BLOCK:
                return mlx5e_rep_setup_tc_block(dev, type_data);
        default:
                return -EOPNOTSUPP;
        }
}

bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep;

        if (!MLX5_ESWITCH_MANAGER(priv->mdev))
                return false;

        if (!rpriv) /* non vport rep mlx5e instances don't use this field */
                return false;

        rep = rpriv->rep;
        return (rep->vport == FDB_UPLINK_VPORT);
}

static bool mlx5e_rep_has_offload_stats(const struct net_device *dev, int attr_id)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                        return true;
        }

        return false;
}

static int
mlx5e_get_sw_stats64(const struct net_device *dev,
                     struct rtnl_link_stats64 *stats)
{
        struct mlx5e_priv *priv = netdev_priv(dev);
        struct mlx5e_sw_stats *sstats = &priv->stats.sw;

        mlx5e_rep_update_sw_counters(priv);

        stats->rx_packets = sstats->rx_packets;
        stats->rx_bytes   = sstats->rx_bytes;
        stats->tx_packets = sstats->tx_packets;
        stats->tx_bytes   = sstats->tx_bytes;

        stats->tx_dropped = sstats->tx_queue_dropped;

        return 0;
}

static int mlx5e_rep_get_offload_stats(int attr_id, const struct net_device *dev,
                                       void *sp)
{
        switch (attr_id) {
        case IFLA_OFFLOAD_XSTATS_CPU_HIT:
                return mlx5e_get_sw_stats64(dev, sp);
        }

        return -EINVAL;
}

static void
mlx5e_vf_rep_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
{
        struct mlx5e_priv *priv = netdev_priv(dev);

        /* update HW stats in background for next time */
        mlx5e_queue_update_stats(priv);
        memcpy(stats, &priv->stats.vf_vport, sizeof(*stats));
}

static int mlx5e_vf_rep_change_mtu(struct net_device *netdev, int new_mtu)
{
        return mlx5e_change_mtu(netdev, new_mtu, NULL);
}

static int mlx5e_uplink_rep_change_mtu(struct net_device *netdev, int new_mtu)
{
        return mlx5e_change_mtu(netdev, new_mtu, mlx5e_set_dev_port_mtu);
}

static int mlx5e_uplink_rep_set_mac(struct net_device *netdev, void *addr)
{
        struct sockaddr *saddr = addr;

        if (!is_valid_ether_addr(saddr->sa_data))
                return -EADDRNOTAVAIL;

        ether_addr_copy(netdev->dev_addr, saddr->sa_data);
        return 0;
}

static const struct switchdev_ops mlx5e_rep_switchdev_ops = {
        .switchdev_port_attr_get        = mlx5e_attr_get,
};

static const struct net_device_ops mlx5e_netdev_ops_vf_rep = {
        .ndo_open                = mlx5e_vf_rep_open,
        .ndo_stop                = mlx5e_vf_rep_close,
        .ndo_start_xmit          = mlx5e_xmit,
        .ndo_get_phys_port_name  = mlx5e_rep_get_phys_port_name,
        .ndo_setup_tc            = mlx5e_rep_setup_tc,
        .ndo_get_stats64         = mlx5e_vf_rep_get_stats,
        .ndo_has_offload_stats   = mlx5e_rep_has_offload_stats,
        .ndo_get_offload_stats   = mlx5e_rep_get_offload_stats,
        .ndo_change_mtu          = mlx5e_vf_rep_change_mtu,
};

static const struct net_device_ops mlx5e_netdev_ops_uplink_rep = {
        .ndo_open                = mlx5e_open,
        .ndo_stop                = mlx5e_close,
        .ndo_start_xmit          = mlx5e_xmit,
        .ndo_set_mac_address     = mlx5e_uplink_rep_set_mac,
        .ndo_get_phys_port_name  = mlx5e_rep_get_phys_port_name,
        .ndo_setup_tc            = mlx5e_rep_setup_tc,
        .ndo_get_stats64         = mlx5e_get_stats,
        .ndo_has_offload_stats   = mlx5e_rep_has_offload_stats,
        .ndo_get_offload_stats   = mlx5e_rep_get_offload_stats,
        .ndo_change_mtu          = mlx5e_uplink_rep_change_mtu,
        .ndo_udp_tunnel_add      = mlx5e_add_vxlan_port,
        .ndo_udp_tunnel_del      = mlx5e_del_vxlan_port,
        .ndo_features_check      = mlx5e_features_check,
        .ndo_set_vf_mac          = mlx5e_set_vf_mac,
        .ndo_set_vf_rate         = mlx5e_set_vf_rate,
        .ndo_get_vf_config       = mlx5e_get_vf_config,
        .ndo_get_vf_stats        = mlx5e_get_vf_stats,
};

static void mlx5e_build_rep_params(struct net_device *netdev)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct mlx5_core_dev *mdev = priv->mdev;
        struct mlx5e_params *params;

        u8 cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ?
                                         MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
                                         MLX5_CQ_PERIOD_MODE_START_FROM_EQE;

        params = &priv->channels.params;
        params->hard_mtu    = MLX5E_ETH_HARD_MTU;
        params->sw_mtu      = netdev->mtu;

        /* SQ */
        if (rep->vport == FDB_UPLINK_VPORT)
                params->log_sq_size = MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE;
        else
                params->log_sq_size = MLX5E_REP_PARAMS_LOG_SQ_SIZE;

        /* RQ */
        mlx5e_build_rq_params(mdev, params);

        /* CQ moderation params */
        params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
        mlx5e_set_rx_cq_mode_params(params, cq_period_mode);

        params->num_tc                = 1;

        mlx5_query_min_inline(mdev, &params->tx_min_inline_mode);

        /* RSS */
        mlx5e_build_rss_params(&priv->rss_params, params->num_channels);
}

static void mlx5e_build_rep_netdev(struct net_device *netdev)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct mlx5_core_dev *mdev = priv->mdev;

        if (rep->vport == FDB_UPLINK_VPORT) {
                SET_NETDEV_DEV(netdev, &priv->mdev->pdev->dev);
                netdev->netdev_ops = &mlx5e_netdev_ops_uplink_rep;
                /* we want a persistent mac for the uplink rep */
                mlx5_query_nic_vport_mac_address(mdev, 0, netdev->dev_addr);
                netdev->ethtool_ops = &mlx5e_uplink_rep_ethtool_ops;
#ifdef CONFIG_MLX5_CORE_EN_DCB
                if (MLX5_CAP_GEN(mdev, qos))
                        netdev->dcbnl_ops = &mlx5e_dcbnl_ops;
#endif
        } else {
                netdev->netdev_ops = &mlx5e_netdev_ops_vf_rep;
                eth_hw_addr_random(netdev);
                netdev->ethtool_ops = &mlx5e_vf_rep_ethtool_ops;
        }

        netdev->watchdog_timeo    = 15 * HZ;


        netdev->switchdev_ops = &mlx5e_rep_switchdev_ops;

        netdev->features         |= NETIF_F_VLAN_CHALLENGED | NETIF_F_HW_TC | NETIF_F_NETNS_LOCAL;
        netdev->hw_features      |= NETIF_F_HW_TC;

        netdev->hw_features    |= NETIF_F_SG;
        netdev->hw_features    |= NETIF_F_IP_CSUM;
        netdev->hw_features    |= NETIF_F_IPV6_CSUM;
        netdev->hw_features    |= NETIF_F_GRO;
        netdev->hw_features    |= NETIF_F_TSO;
        netdev->hw_features    |= NETIF_F_TSO6;
        netdev->hw_features    |= NETIF_F_RXCSUM;

        netdev->features |= netdev->hw_features;
}

static int mlx5e_rep_get_default_num_channels(struct mlx5_eswitch_rep *rep,
                                              struct net_device *netdev)
{
        if (rep->vport == FDB_UPLINK_VPORT)
                return mlx5e_get_netdev_max_channels(netdev);
        else
                return 1;
}

static int mlx5e_init_rep(struct mlx5_core_dev *mdev,
                          struct net_device *netdev,
                          const struct mlx5e_profile *profile,
                          void *ppriv)
{
        struct mlx5e_priv *priv = netdev_priv(netdev);
        struct mlx5e_rep_priv *rpriv = ppriv;
        int err;

        err = mlx5e_netdev_init(netdev, priv, mdev, profile, ppriv);
        if (err)
                return err;

        priv->channels.params.num_channels =
                        mlx5e_rep_get_default_num_channels(rpriv->rep, netdev);

        mlx5e_build_rep_params(netdev);
        mlx5e_build_rep_netdev(netdev);

        mlx5e_timestamp_init(priv);

        return 0;
}

static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
{
        mlx5e_netdev_cleanup(priv->netdev, priv);
}

static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
{
        struct ttc_params ttc_params = {};
        int tt, err;

        priv->fs.ns = mlx5_get_flow_namespace(priv->mdev,
                                              MLX5_FLOW_NAMESPACE_KERNEL);

        /* The inner_ttc in the ttc params is intentionally not set */
        ttc_params.any_tt_tirn = priv->direct_tir[0].tirn;
        mlx5e_set_ttc_ft_params(&ttc_params);
        for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
                ttc_params.indir_tirn[tt] = priv->indir_tir[tt].tirn;

        err = mlx5e_create_ttc_table(priv, &ttc_params, &priv->fs.ttc);
        if (err) {
                netdev_err(priv->netdev, "Failed to create rep ttc table, err=%d\n", err);
                return err;
        }
        return 0;
}

static int mlx5e_create_rep_vport_rx_rule(struct mlx5e_priv *priv)
{
        struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_eswitch_rep *rep = rpriv->rep;
        struct mlx5_flow_handle *flow_rule;
        struct mlx5_flow_destination dest;

        dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
        dest.tir_num = priv->direct_tir[0].tirn;
        flow_rule = mlx5_eswitch_create_vport_rx_rule(esw,
                                                      rep->vport,
                                                      &dest);
        if (IS_ERR(flow_rule))
                return PTR_ERR(flow_rule);
        rpriv->vport_rx_rule = flow_rule;
        return 0;
}

static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)
{
        struct mlx5_core_dev *mdev = priv->mdev;
        int err;

        mlx5e_init_l2_addr(priv);

        err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
        if (err) {
                mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
                return err;
        }

        err = mlx5e_create_indirect_rqt(priv);
        if (err)
                goto err_close_drop_rq;

        err = mlx5e_create_direct_rqts(priv);
        if (err)
                goto err_destroy_indirect_rqts;

        err = mlx5e_create_indirect_tirs(priv, false);
        if (err)
                goto err_destroy_direct_rqts;

        err = mlx5e_create_direct_tirs(priv);
        if (err)
                goto err_destroy_indirect_tirs;

        err = mlx5e_create_rep_ttc_table(priv);
        if (err)
                goto err_destroy_direct_tirs;

        err = mlx5e_create_rep_vport_rx_rule(priv);
        if (err)
                goto err_destroy_ttc_table;

        return 0;

err_destroy_ttc_table:
        mlx5e_destroy_ttc_table(priv, &priv->fs.ttc);
err_destroy_direct_tirs:
        mlx5e_destroy_direct_tirs(priv);
err_destroy_indirect_tirs:
        mlx5e_destroy_indirect_tirs(priv, false);
err_destroy_direct_rqts:
        mlx5e_destroy_direct_rqts(priv);
err_destroy_indirect_rqts:
        mlx5e_destroy_rqt(priv, &priv->indir_rqt);
err_close_drop_rq:
        mlx5e_close_drop_rq(&priv->drop_rq);
        return err;
}

static void mlx5e_cleanup_rep_rx(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;

        mlx5_del_flow_rules(rpriv->vport_rx_rule);
        mlx5e_destroy_ttc_table(priv, &priv->fs.ttc);
        mlx5e_destroy_direct_tirs(priv);
        mlx5e_destroy_indirect_tirs(priv, false);
        mlx5e_destroy_direct_rqts(priv);
        mlx5e_destroy_rqt(priv, &priv->indir_rqt);
        mlx5e_close_drop_rq(&priv->drop_rq);
}

static int mlx5e_init_rep_tx(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        struct mlx5_rep_uplink_priv *uplink_priv;
        int tc, err;

        err = mlx5e_create_tises(priv);
        if (err) {
                mlx5_core_warn(priv->mdev, "create tises failed, %d\n", err);
                return err;
        }

        if (rpriv->rep->vport == FDB_UPLINK_VPORT) {
                uplink_priv = &rpriv->uplink_priv;

                /* init shared tc flow table */
                err = mlx5e_tc_esw_init(&uplink_priv->tc_ht);
                if (err)
                        goto destroy_tises;

                /* init indirect block notifications */
                INIT_LIST_HEAD(&uplink_priv->tc_indr_block_priv_list);
                uplink_priv->netdevice_nb.notifier_call = mlx5e_nic_rep_netdevice_event;
                err = register_netdevice_notifier(&uplink_priv->netdevice_nb);
                if (err) {
                        mlx5_core_err(priv->mdev, "Failed to register netdev notifier\n");
                        goto tc_esw_cleanup;
                }
        }

        return 0;

tc_esw_cleanup:
        mlx5e_tc_esw_cleanup(&uplink_priv->tc_ht);
destroy_tises:
        for (tc = 0; tc < priv->profile->max_tc; tc++)
                mlx5e_destroy_tis(priv->mdev, priv->tisn[tc]);
        return err;
}

static void mlx5e_cleanup_rep_tx(struct mlx5e_priv *priv)
{
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
        int tc;

        for (tc = 0; tc < priv->profile->max_tc; tc++)
                mlx5e_destroy_tis(priv->mdev, priv->tisn[tc]);

        if (rpriv->rep->vport == FDB_UPLINK_VPORT) {
                /* clean indirect TC block notifications */
                unregister_netdevice_notifier(&rpriv->uplink_priv.netdevice_nb);
                mlx5e_rep_indr_clean_block_privs(rpriv);

                /* delete shared tc flow table */
                mlx5e_tc_esw_cleanup(&rpriv->uplink_priv.tc_ht);
        }
}

static void mlx5e_vf_rep_enable(struct mlx5e_priv *priv)
{
        struct net_device *netdev = priv->netdev;
        struct mlx5_core_dev *mdev = priv->mdev;
        u16 max_mtu;

        netdev->min_mtu = ETH_MIN_MTU;
        mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
        netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
}

static int uplink_rep_async_event(struct notifier_block *nb, unsigned long event, void *data)
{
        struct mlx5e_priv *priv = container_of(nb, struct mlx5e_priv, events_nb);
        struct mlx5_eqe   *eqe = data;

        if (event != MLX5_EVENT_TYPE_PORT_CHANGE)
                return NOTIFY_DONE;

        switch (eqe->sub_type) {
        case MLX5_PORT_CHANGE_SUBTYPE_DOWN:
        case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE:
                queue_work(priv->wq, &priv->update_carrier_work);
                break;
        default:
                return NOTIFY_DONE;
        }

        return NOTIFY_OK;
}

static void mlx5e_uplink_rep_enable(struct mlx5e_priv *priv)
{
        struct net_device *netdev = priv->netdev;
        struct mlx5_core_dev *mdev = priv->mdev;
        u16 max_mtu;

        netdev->min_mtu = ETH_MIN_MTU;
        mlx5_query_port_max_mtu(priv->mdev, &max_mtu, 1);
        netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
        mlx5e_set_dev_port_mtu(priv);

        mlx5_lag_add(mdev, netdev);
        priv->events_nb.notifier_call = uplink_rep_async_event;
        mlx5_notifier_register(mdev, &priv->events_nb);
#ifdef CONFIG_MLX5_CORE_EN_DCB
        mlx5e_dcbnl_initialize(priv);
        mlx5e_dcbnl_init_app(priv);
#endif
}

static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
{
        struct mlx5_core_dev *mdev = priv->mdev;

#ifdef CONFIG_MLX5_CORE_EN_DCB
        mlx5e_dcbnl_delete_app(priv);
#endif
        mlx5_notifier_unregister(mdev, &priv->events_nb);
        mlx5_lag_remove(mdev);
}

static const struct mlx5e_profile mlx5e_vf_rep_profile = {
        .init                   = mlx5e_init_rep,
        .cleanup                = mlx5e_cleanup_rep,
        .init_rx                = mlx5e_init_rep_rx,
        .cleanup_rx             = mlx5e_cleanup_rep_rx,
        .init_tx                = mlx5e_init_rep_tx,
        .cleanup_tx             = mlx5e_cleanup_rep_tx,
        .enable                 = mlx5e_vf_rep_enable,
        .update_stats           = mlx5e_vf_rep_update_hw_counters,
        .rx_handlers.handle_rx_cqe       = mlx5e_handle_rx_cqe_rep,
        .rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
        .max_tc                 = 1,
};

static const struct mlx5e_profile mlx5e_uplink_rep_profile = {
        .init                   = mlx5e_init_rep,
        .cleanup                = mlx5e_cleanup_rep,
        .init_rx                = mlx5e_init_rep_rx,
        .cleanup_rx             = mlx5e_cleanup_rep_rx,
        .init_tx                = mlx5e_init_rep_tx,
        .cleanup_tx             = mlx5e_cleanup_rep_tx,
        .enable                 = mlx5e_uplink_rep_enable,
        .disable                = mlx5e_uplink_rep_disable,
        .update_stats           = mlx5e_uplink_rep_update_hw_counters,
        .update_carrier         = mlx5e_update_carrier,
        .rx_handlers.handle_rx_cqe       = mlx5e_handle_rx_cqe_rep,
        .rx_handlers.handle_rx_cqe_mpwqe = mlx5e_handle_rx_cqe_mpwrq,
        .max_tc                 = MLX5E_MAX_NUM_TC,
};

/* e-Switch vport representors */
static int
mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
{
        const struct mlx5e_profile *profile;
        struct mlx5e_rep_priv *rpriv;
        struct net_device *netdev;
        int nch, err;

        rpriv = kzalloc(sizeof(*rpriv), GFP_KERNEL);
        if (!rpriv)
                return -ENOMEM;

        /* rpriv->rep to be looked up when profile->init() is called */
        rpriv->rep = rep;

        nch = mlx5e_get_max_num_channels(dev);
        profile = (rep->vport == FDB_UPLINK_VPORT) ? &mlx5e_uplink_rep_profile : &mlx5e_vf_rep_profile;
        netdev = mlx5e_create_netdev(dev, profile, nch, rpriv);
        if (!netdev) {
                pr_warn("Failed to create representor netdev for vport %d\n",
                        rep->vport);
                kfree(rpriv);
                return -EINVAL;
        }

        rpriv->netdev = netdev;
        rep->rep_if[REP_ETH].priv = rpriv;
        INIT_LIST_HEAD(&rpriv->vport_sqs_list);

        if (rep->vport == FDB_UPLINK_VPORT) {
                err = mlx5e_create_mdev_resources(dev);
                if (err)
                        goto err_destroy_netdev;
        }

        err = mlx5e_attach_netdev(netdev_priv(netdev));
        if (err) {
                pr_warn("Failed to attach representor netdev for vport %d\n",
                        rep->vport);
                goto err_destroy_mdev_resources;
        }

        err = mlx5e_rep_neigh_init(rpriv);
        if (err) {
                pr_warn("Failed to initialized neighbours handling for vport %d\n",
                        rep->vport);
                goto err_detach_netdev;
        }

        err = register_netdev(netdev);
        if (err) {
                pr_warn("Failed to register representor netdev for vport %d\n",
                        rep->vport);
                goto err_neigh_cleanup;
        }

        return 0;

err_neigh_cleanup:
        mlx5e_rep_neigh_cleanup(rpriv);

err_detach_netdev:
        mlx5e_detach_netdev(netdev_priv(netdev));

err_destroy_mdev_resources:
        if (rep->vport == FDB_UPLINK_VPORT)
                mlx5e_destroy_mdev_resources(dev);

err_destroy_netdev:
        mlx5e_destroy_netdev(netdev_priv(netdev));
        kfree(rpriv);
        return err;
}

static void
mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
{
        struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
        struct net_device *netdev = rpriv->netdev;
        struct mlx5e_priv *priv = netdev_priv(netdev);
        void *ppriv = priv->ppriv;

        unregister_netdev(netdev);
        mlx5e_rep_neigh_cleanup(rpriv);
        mlx5e_detach_netdev(priv);
        if (rep->vport == FDB_UPLINK_VPORT)
                mlx5e_destroy_mdev_resources(priv->mdev);
        mlx5e_destroy_netdev(priv);
        kfree(ppriv); /* mlx5e_rep_priv */
}

static void *mlx5e_vport_rep_get_proto_dev(struct mlx5_eswitch_rep *rep)
{
        struct mlx5e_rep_priv *rpriv;

        rpriv = mlx5e_rep_to_rep_priv(rep);

        return rpriv->netdev;
}

void mlx5e_rep_register_vport_reps(struct mlx5_core_dev *mdev)
{
        struct mlx5_eswitch *esw = mdev->priv.eswitch;
        int total_vfs = MLX5_TOTAL_VPORTS(mdev);
        int vport;

        for (vport = 0; vport < total_vfs; vport++) {
                struct mlx5_eswitch_rep_if rep_if = {};

                rep_if.load = mlx5e_vport_rep_load;
                rep_if.unload = mlx5e_vport_rep_unload;
                rep_if.get_proto_dev = mlx5e_vport_rep_get_proto_dev;
                mlx5_eswitch_register_vport_rep(esw, vport, &rep_if, REP_ETH);
        }
}

void mlx5e_rep_unregister_vport_reps(struct mlx5_core_dev *mdev)
{
        struct mlx5_eswitch *esw = mdev->priv.eswitch;
        int total_vfs = MLX5_TOTAL_VPORTS(mdev);
        int vport;

        for (vport = total_vfs - 1; vport >= 0; vport--)
                mlx5_eswitch_unregister_vport_rep(esw, vport, REP_ETH);
}